Acute occlusion of the portal vein in the calf.
D000818:Animals; D001794:Blood Pressure; D001810:Blood Volume; D002417:Cattle; D006471:Gastrointestinal Hemorrhage / Q000209:etiology; D008102:Liver Circulation; D011169:Portal Vein / Q000503:physiopathology*; D014652:Vascular Diseases / Q000503:physiopathology